JP2014005997A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator that uses a vacuum heat insulating material and a liquid foam heat insulating material as a heat insulating material, and prevents a space in which no heat insulating material is filled from occurring to obtain a high heat insulation effect.SOLUTION: A refrigerator comprises a heat insulation box body 3 formed into a box shape with a plurality of plate-like bodies, and a plurality of doors formed of plate-like bodies closing an opening of a front face of the heat insulation box body 3. A plate-like body 6 has an outer plate 31 and an inner plate 32 between which a vacuum heat insulating material 35 and a liquid foam heat insulating material 36 are filled. The vacuum heat insulating material 35 is formed into a plate shape and is provided in its surfaces with recessed grooves 35a in a lattice shape for reducing flow resistance of the liquid foam heat insulating material 36.

Description

  Embodiments of the present invention relate to a refrigerator.

  In order to improve the heat insulation performance and save energy, the refrigerator is configured by sandwiching a heat insulating material in a space between an outer plate and an inner plate of a plurality of plate-like bodies constituting a heat insulation box that is a refrigerator main body. ing. In addition, the refrigerator is configured such that a plurality of doors that block the opening portion of the heat insulation box sandwich a heat insulating material in a space between the outer plate and the inner plate. And, as this heat insulating material, a liquid foam heat insulating material made of rigid urethane foam or the like has been used conventionally, but in recent years, a heat insulating effect is larger than this liquid foam heat insulating material and can be made thin. The use of is being considered.

JP 2006-90649 A

  The present invention relates to a refrigerator that uses a vacuum heat insulating material in a space between an outer plate and an inner plate in a plate-like body that constitutes such a heat insulating box or door, and includes an outer plate, an inner plate, and a vacuum insulating material. The object is to provide a refrigerator having high volumetric efficiency and high heat insulation effect, in which a liquid foam heat insulating material is filled in between without any gap.

  The refrigerator according to the embodiment includes a heat insulating box formed in a box shape with a plurality of plate-like bodies, and a plurality of doors made of plate-like bodies that block the front opening of the heat insulating box, And an outer plate and an inner plate, and a vacuum heat insulating material and a liquid foam heat insulating material are filled between the outer plate and the inner plate, and the vacuum heat insulating material is plate-shaped and has an uncured liquid foam heat insulating surface. A plurality of concave grooves for reducing the flow resistance of the material are formed.

  The refrigerator of the embodiment includes a heat insulating box formed in a box shape by a plurality of plate-like bodies, and a plurality of doors made of a plate-like body that closes the front opening of the heat insulating box, and the plate-like body Has an outer plate and an inner plate, a vacuum heat insulating material and a liquid foam heat insulating material are filled between the outer plate and the inner plate, and between the outer plate and / or inner plate and the vacuum heat insulating material, A spacer for forming a gap for assisting the flow of the uncured liquid foam heat insulating material is arranged.

It is a perspective view of the refrigerator in the 1st-3rd embodiment. It is a perspective view of the state which removed the door of the said refrigerator. It is a cross-sectional view of the left side plate in the first embodiment. It is a front view of the vacuum heat insulating material in 1st Embodiment. It is an expansion longitudinal cross-sectional view of the left side board in 2nd Embodiment. It is a cross-sectional view of the left side plate in the third embodiment. It is explanatory drawing which shows the state which removed the intermediate board of the left side surface board in 3rd Embodiment. It is explanatory drawing which shows the state which removed the intermediate board of the left side surface board in 3rd Embodiment. It is explanatory drawing which shows the state which removed the intermediate board of the left side surface board in 3rd Embodiment. It is explanatory drawing which shows the state which removed the intermediate board of the left side surface board in 3rd Embodiment.

  Hereinafter, embodiments will be described in detail with reference to the drawings.

(First embodiment)
As shown in FIGS. 1 and 2, the refrigerator 1 in the present embodiment has a heat insulating box 3 whose front is an opening and the inside is partitioned into a plurality of rooms, and a plurality of openings that seal the front opening of each room. And doors that are plate-like bodies 21 to 26.

  The heat insulating box 3 is configured by combining a left side plate 6, a right side plate 7, a top plate 8, a bottom plate 9, and a back plate 10. The heat insulation box 3 is partitioned into five rooms of a refrigerator compartment 11, a vegetable compartment 12, a side-by-side ice making room 13, a first freezer compartment 14, and a second freezer compartment 15 in order from the top. In addition, a front-opening type refrigerator compartment first door 21 and a refrigerator compartment second door 22 are attached to the front opening of the refrigerator compartment 11. In addition, in the opening on the front side of the vegetable room 12, the ice making room 13, the first freezing room 14, and the second freezing room 15, a drawer type vegetable room door 23, an ice making room door 24, a first freezing room door 25, respectively. A second freezer compartment door 26 is attached. Hereinafter, the plates 6 to 10 and the doors 21 to 26 constituting the heat insulating box 3 are referred to as plate-like bodies, and the left side plate 6 will be described as an example for explanation of the plate-like bodies.

  FIG. 3 is a cross-sectional view of the left side plate 6, and FIG. 4 is an explanatory diagram relating to the concave groove of the vacuum heat insulating material 35. As shown in FIG. 3, the left side plate 6 includes an outer plate 31, an inner plate 32, a vacuum heat insulating material 35 disposed so as to be sandwiched between the outer plate 31 and the inner plate 32, And a liquid foam heat insulating material 36 filled in a space where the vacuum heat insulating material is not located in the space between the inner plate 32.

  The vacuum heat insulating material 35 is a plate-like heat insulating material called VIP (Vacuum Insulation Panel), and has a structure in which an inorganic core material such as glass wool is vacuum packed with an envelope film. The envelope film is, for example, a sandwich structure of an aluminum foil and a resin film, or a laminate film in which aluminum-deposited resin films are laminated. Although this vacuum heat insulating material 35 is disposed over the entire left side plate 6, it has a low degree of design freedom due to its structure and cannot be deformed. Therefore, a vacuum is formed in the space between the outer plate 31 and the inner plate 32. A space is formed in which the heat insulating material 35 is not located. Moreover, although the vacuum heat insulating material 35 is plate-shaped, the thickness may differ depending on the location, and a space may be generated between the outer plate 31 and the inner plate 32 due to a change in thickness. Further, the vacuum heat insulating material 35 is easily damaged by the outer packaging film, and if the hole is opened, the heat insulating effect is significantly reduced. . Therefore, the liquid foam heat insulating material 36 is supplementarily filled in the space where the vacuum heat insulating material 35 cannot be disposed.

  Since the liquid foam heat insulating material 36 is a fluid until it is foamed and solidified, it can be easily injected into a complicated space or a small space in which many members are complicated and foamed to fill the space. However, when there are a plurality of spaces that need to be filled and they are separated from each other, the liquid foam heat insulating material does not reach the entire space due to the flow resistance of the liquid foam heat insulating material 36, and there is no space where there is no heat insulating material. May occur and the heat insulation effect may be reduced.

  Therefore, as shown in FIGS. 3 and 4, the vacuum heat insulating material 35 according to the present embodiment has a groove 35 a formed in advance on the surface thereof. A plurality of the concave grooves 35a are formed in a lattice shape in the vertical direction and the horizontal direction over the entire surface of the vacuum heat insulating material 35. The cross section of the groove 35a is substantially semicircular, and the diameter is 7 to 20 mm, preferably 10 mm. However, the optimum diameter varies depending on the type and viscosity of the liquid foam heat insulating material 36, and is not limited to this value. That is, the concave groove 35a reduces the flow resistance of the uncured liquid foam heat insulating material 36, and reduces the flow resistance of the liquid foam heat insulating material 36 by arranging or patterning the liquid foam heat insulating material 36 over the entire space. It is possible to have such a size that the area occupied by the vacuum heat insulating material 35 is not greatly reduced. The cross-sectional shape of the groove 35a is not limited to a semicircle, and may be a rectangle such as a rectangle, a square, or a trapezoid.

  Thus, by forming the groove 35a in advance on the surface of the vacuum heat insulating material 35, it is ensured that the space between the outer plate 31 and the inner plate 32 is not provided with the vacuum heat insulating material 35. The cured liquid foam heat insulating material 36 is allowed to flow and foamed to fill the entire space without any gaps, and the heat insulating effect of the plate-like body can be enhanced.

  Further, by forming the concave grooves 35a in a lattice shape over the entire surface of the vacuum heat insulating material 35, it is possible to reliably place a space between the outer plate 31 and the inner plate 32 where the vacuum heat insulating material 35 is not disposed. The liquid foam heat insulating material 36 can be caused to flow into the space to be foamed to fill the entire space.

  And by using the vacuum heat insulating material 35 having such a configuration for all the plate-like bodies 6 to 10, 21 to 26, the plate thickness is thin, the volumetric efficiency is good, the heat insulating effect is high, and the manufacturing efficiency is also high. The refrigerator 1 can be realized.

  In FIG. 3, the concave grooves 35 a are formed on both surfaces of the vacuum heat insulating material 35 (surfaces facing the outer plate 31 and the inner plate 32). However, the concave grooves 35 a are formed on one surface of the vacuum heat insulating material 35. The other surface may be formed and bonded to the outer plate 31 and the inner plate 32. Moreover, only the plate-like bodies 6-10 which form the heat insulation box 3 and the structure which uses the vacuum heat insulating material 35 of this embodiment only for the plate-like bodies of any one of the plate-like bodies 6-10, 21-26. It is good also as a structure which uses the vacuum heat insulating material 35 of this embodiment.

(Second Embodiment)
Next, a second embodiment will be described. FIG. 5 is a cross-sectional view of the left side plate 6 of the refrigerator according to the second embodiment. The plate-like bodies 6 to 10 constituting the heat insulation box 3 of the refrigerator 1 are provided with heat radiation pipes 41 for radiating heat generated inside the heat insulation box 3 to the outside. Therefore, it is necessary to provide a space through which the heat radiation pipe 41 passes between the outer plate 31 and the inner plate 32 in the plate-like bodies 6 to 10.

  In the plate-like bodies 6 to 10 (for example, the left side plate 6) in the present embodiment, a plurality of concave grooves 35a are formed on the surface of the vacuum heat insulating material 35 as in the first embodiment, and the heat radiating pipe in the concave grooves 35a. A portion where 41 is located is formed as a space through which the heat radiating pipe 41 passes. That is, the concave groove 35 a formed on the surface of the vacuum heat insulating material 35 in the first embodiment is used as a pipe space forming portion that avoids the heat radiating pipe 41. In FIG. 5, the groove 35a as the pipe space forming portion is formed in the same size as the other groove 35a, but the groove 35a as the pipe space forming portion is formed as another groove 35a. You may form larger.

  According to the left side plate (plate-like body) 6 in the present embodiment, a plurality of concave grooves 35a are formed on the surface of the vacuum heat insulating material 35, and the concave grooves 35a corresponding to positions through which the heat radiating pipe 41 passes are formed as pipe spaces. By configuring as the forming portion, the space through which the heat radiating pipe 41 passes can be easily formed in the plate-like body, and the liquid foam heat insulating material 36 can be reliably filled in the periphery of the heat radiating pipe 41. And by comprising the heat insulation box 3 using such plate-shaped bodies 6-10, combined with presence of a vacuum heat insulating material, plate | board thickness is thin and volumetric efficiency is good, and the refrigerator 1 with a high heat insulation effect on it. Can provide.

(Third embodiment)
Next, a third embodiment will be described. FIG. 6 is a cross-sectional view of the left side plate 6 of the refrigerator of the third embodiment. In the plate-like bodies 6 to 10, 21 to 26 (for example, the left side plate 6) in the present embodiment, a plurality of rectangular parallelepiped spacers 51 are arranged between the vacuum heat insulating material 35 and the outer plate 31 and the inner plate 32. The space between the vacuum heat insulating material 35 formed by 51 and the outer plate 31 and the inner plate 32 is filled with the liquid foam heat insulating material 36. That is, the plate-like bodies 6 to 10 and 21 to 26 reduce the flow resistance during the injection of the liquid foam heat insulating material 36 by disposing the spacer 51 between the vacuum heat insulating material 35 and the outer plate 31 and the inner plate 32. In other words, the liquid foam insulation 36 is spread over all the spaces.

  As shown in FIG. 7, the spacer 51 is a rectangular parallelepiped that is long in the vertical direction. On the left side plate 6, a plurality of spacers 51 are arranged in parallel with a predetermined interval. In a state where the spacer 51 is disposed between the vacuum heat insulating material 35 and the outer plate 31 and the inner plate 32, a predetermined gap is formed between the upper and lower sides of the spacer 51 and the upper and lower end surfaces of the outer plate 31 and the inner plate 32. ing. By disposing the spacer 51 in this way, the liquid foam heat insulating material 36 can easily flow, foam and fill all the spaces between the vacuum heat insulating material 35 and the outer plate 31 and the inner plate 32.

  Further, as shown in FIG. 8, the spacer 51 may be a rectangular parallelepiped that is long in the lateral direction, and a plurality of spacers 51 may be arranged in parallel between the vacuum heat insulating material 35 and the outer plate 31 and the inner plate 32. Furthermore, it is not limited to using the spacer 51 which is long in the vertical direction or the horizontal direction. For example, as shown in FIGS. 9 and 10, the rectangular parallelepiped spacers 51 having a short length are spaced apart from each other by a predetermined distance. It can also be set as the structure arranged in a vertical direction or a horizontal direction in a state. By arranging in this way, the flow resistance of the liquid foam heat insulating material 36 can be reduced.

  The spacer 51 is not limited to a rectangular parallelepiped shape, and may be a rod-shaped body having a semicircular cross section or a rod-shaped body having a trapezoidal cross section. In addition, the spacer 51 may be configured to be adhered to the vacuum heat insulating material 35, the outer plate 31 and the inner plate 32, or may be configured to previously form the spacer 51 on the outer plate 31 and the inner plate 32. When the outer plate 31 and the inner plate 32 are made of metal, it is necessary that the vacuum heat insulating material 35 is not damaged by burrs or the like.

  Generally, a vacuum heat insulating material has a larger heat insulating effect than a foam heat insulating material, but the degree of freedom of processing is limited. Further, the vacuum heat insulating material has a structure in which the core material is vacuum packed with a thin outer packaging film, and the outer packaging film is easily damaged. Therefore, when vacuum heat insulating material is applied to the space between the refrigerator outer box and inner box (and the door outer plate and inner plate), it is filled with a place where a hinge, a screw, a heat radiating pipe or the like is located, or a vacuum insulating material The gap that cannot be filled is filled with liquid foam insulation. However, if the liquid foam insulation is simply filled into the space created when the vacuum insulation is placed, the efficiency of the work of filling the uncured liquid foam insulation is poor, and the viscosity of the uncured liquid foam insulation is not good. Therefore, there may be a space without the heat insulating material without the liquid foam heat insulating material reaching the corners of the space. On the other hand, according to the refrigerator of each embodiment of the present invention, in using the vacuum heat insulating material in the space between the outer plate and the inner plate in the plate-like body constituting the heat insulating box and the door, By providing a space for suppressing the flow resistance of the liquid foam heat insulating material between the outer plate and the inner plate and the vacuum heat insulating material in advance, it is possible to prevent a space not filled with the heat insulating material from being generated. Combined with the presence of the refrigerator, a refrigerator with high heat insulation effect can be manufactured.

  Although several embodiments have been described above, these embodiments are presented as examples and are not intended to limit the scope of the present invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

1 Refrigerator 3 Insulation box 6 Left side plate (plate)
7 Right side plate (plate)
8 Top plate (plate)
9 Bottom plate (plate-shaped body)
10 Back plate (plate body)
DESCRIPTION OF SYMBOLS 11 Refrigeration room 12 Vegetable room 13 Ice making room 14 1st freezer room 15 2nd freezer room 21-26 Door (plate-shaped body)
31 outer plate 32 inner plate 35 vacuum heat insulating material 35a concave groove 36 liquid foam heat insulating material 41 heat radiating pipe 51 spacer

Claims (4)

A heat insulating box formed in a box shape by a plurality of plate-like bodies, and a plurality of doors made of plate-like bodies closing the front opening of the heat insulating box,
The plate-like body has an outer plate and an inner plate, and a vacuum heat insulating material and a liquid foam heat insulating material are filled between the outer plate and the inner plate,
The said vacuum heat insulating material is plate shape, The some recessed groove for reducing the flow resistance when inject | pouring a non-hardened liquid foam heat insulating material is formed in the surface, The refrigerator characterized by the above-mentioned.   The refrigerator according to claim 1, wherein the vacuum heat insulating material has a lattice-shaped groove extending in a vertical direction on a surface thereof.   3. The refrigerator according to claim 1, wherein the concave groove is formed in the vacuum heat insulating material at a position corresponding to a heat radiating pipe disposed between the outer plate and the inner plate. A heat insulating box formed in a box shape by a plurality of plate-like bodies, and a plurality of doors made of plate-like bodies closing the front opening of the heat insulating box,
The plate-like body has an outer plate and an inner plate, and a vacuum heat insulating material and a liquid foam heat insulating material are filled between the outer plate and the inner plate,
A refrigerator in which a spacer is formed between the outer plate and / or inner plate and the vacuum heat insulating material to form a gap for assisting the flow of the uncured liquid foam heat insulating material.

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